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PartsTable / COMPONENT / A4-55
A4-55 ✓ Verified by PartsTable
— · PSU
WHAT YOU NEED TO KNOW
Always quote matching pair — mixed wattage causes throttling Platinum/Titanium = higher efficiency = lower power cost over time
AC or DC input? Verify customer site power
PRODUCT OVERVIEW

The POWER SUPPLY is a the manufacturer power supply unit built for continuous operation in enterprise server and storage platforms. Key specifications include diameter: 0.438 INCHES NOMINAL IN, material: STEEL COMP 8620 OVERALL, drive_type: SLOTTED, grip_length: 0.5000 INCHES NOMINAL IN, input_phase: SINGLE SINGLE OPERATING POWER RQMT, output_phase: THREE SINGLE POWER OUTPUT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 1680-00-010-9594, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
A4-55
NSN: 1680-00-010-9594
FSC: 1680
CAGE: 99145 — EATON AEROSPACE LLC ED AND C WEST DIV (USA)
SPECIFICATIONS
diameter0.438 INCHES NOMINAL IN
materialSTEEL COMP 8620 OVERALL
drive_typeSLOTTED
grip_length0.5000 INCHES NOMINAL IN
input_phaseSINGLE SINGLE OPERATING POWER RQMT
output_phaseTHREE SINGLE POWER OUTPUT
overall_width7.000 INCHES NOMINAL IN
overall_height4.625 INCHES NOMINAL IN
overall_length11.250 INCHES NOMINAL IN
shank_neck_length0.080 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
input_voltage_rating115.0 AC VOLTS NOMINAL SINGLE OPERATING POWER RQMT
NSN1680-00-010-9594
COMPONENT DIAGRAM
PULL TAB AIRFLOW —W PLATINUM 100-240V~ 50/60Hz OEM BACKPLANE CONN ~200 mm HOT-PLUG POWER SUPPLY | —W | Platinum AC input 100-240V | Redundant pair required | Match wattage in same chassis TITLE PSU —W PN A4-55 MFR OEM Platinum
TYPICAL APPLICATIONS
  • Server power supply replacement (failed or degraded)
  • Redundant power upgrade for high-availability
  • Power capacity upgrade for GPU or expansion configurations
  • Hot-swap power maintenance in production environments
  • Spare inventory for break-fix operations
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
A4-55Interchangeable
interchangeable cross-reference
interchangeable
526-5-202Interchangeable
interchangeable cross-reference
interchangeable
1201-450-Z3CInterchangeable
interchangeable cross-reference
interchangeable
32-0230002-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A4-55?
A4-55 is a POWER SUPPLY.
What parts can replace A4-55?
There are 4 known substitutes for A4-55: A4-55, 526-5-202, 1201-450-Z3C and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A4-55?
A4-55 is cataloged in the Federal Logistics Information System (FLIS) under NSN 1680-00-010-9594. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026